Lenovo ThinkPad T400 6474 Hardware Maintenance Manual page 59

Table 1. FRU tests (continued)
FRU Applicable test
Optical drive 1. Diagnostics --> Other Devices--> Optical Drive
2. Interactive Tests --> Optical Drive Test
Memory 1. If two DIMMs are installed, remove one of them and run
2. If the problem does not recur, return the DIMM to its place,
Fan 1. Turn on the computer and check the air turbulence at the
2.
TrackPoint or pointing If the TrackPoint does not work, check the configuration as
device specified in the BIOS Setup Utility. If the TrackPoint is disabled,
select Automatic to enable it.
After you use the TrackPoint, the pointer may drift on the screen
for a short time. This drift can occur when a slight, steady
pressure is applied to the TrackPoint pointer. This symptom is not
a hardware problem. If the pointer stops after a short time, no
service action is necessary.
If enabling the TrackPoint does not correct the problem, continue
with the following:
v Interactive Tests --> Mouse
Touch Pad If the Touch Pad does not work, check the configuration as
specified in the BIOS Setup Utility. If the Touch Pad is disabled,
select Automatic to enable it. If enabling the Touch Pad does not
correct the problem, continue with the following:
v Interactive Tests --> Mouse
Diagnostics --> Advanced Memory Tests.
remove the other one, and run the test again.
louver near the PC Card slot.
Run Diagnostics --> ThinkPad Devices --> Fan.
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